Vacuum cleaner is an apparatus that creates a partial vacuum and is used to suck up dust and dirt. It uses an air pump to create a vacuum, and it is used to clean floors, but it can also clean other surfaces. It have transformed remarkably over the years and so has the demand for innovation. Throughout the years, vacuum cleaner has evolved in terms of its functions and part features. Referring to Figure 2, identify the value aided to part features throughout the evolution.

1. Discuss the product features that has been eliminated or modified without impairing

function or reliability.

2. As it evolve, does it cost more than its worth? Explain in detail.

VACUUM CLEANER Since their inception, vacuum cleaners have evolved to be smaller and more portable, with the goal of making cleaning easier. 2000 1900s Hoover Modelo 1920s Hoover 700 1940s Electrolux 236 1960s The Hoover Constellation 1980s Cyclone Roomba 19105 The Royal Standard 1930s Hoover Model 150 1950s The Hamilton Beach Model 14 1970s Interstate Engineering Corporation's Model C-8 1990s Dyson DC01 Bagless 'Hoover 20105 Dyson 360 Eye SavingSpot